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int n = 0;
int val = cos(PI/2*n);
++n;
#include <stdio.h>
#define N 100
void main(void)
{
int a[4] = {1,0,-1,0};
int i = 0;
while(i<N)
{
printf("%d",a[i%4]);
if (i+1 < N)
{
printf(",");
}
i++;
}
getchar();
}
不要for循环,那就用while循环呗
#include <stdio.h>
#define N 100
void main(void)
{
int a[4] = {1,0,-1,0};
for(int i=0;i < N;i++)
{
printf("%d",a[i%4]);
if (i+1 < N)
{
printf(",");
}
}
getchar();
}